ICD-10 Diagnosis Code L56.4

Polymorphous light eruption

Diagnosis Code L56.4

ICD-10: L56.4
Short Description: Polymorphous light eruption
Long Description: Polymorphous light eruption
This is the 2017 version of the ICD-10-CM diagnosis code L56.4

Code Classification
  • Diseases of the skin and subcutaneous tissue
    • Radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
      • Other acute skin changes due to ultraviolet radiation (L56)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code L56.4 is grouped in the following Diagnostic Related Group(s) (MS-DRG v33.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Acne estivalis
  • Hydroa estivale
  • Hydroa vacciniforme
  • Juvenile spring eruption
  • Light - exacerbated acne
  • Polymorphic light eruption
  • Polymorphous light eruption, diffuse erythematous type
  • Polymorphous light eruption, eczematous type
  • Polymorphous light eruption, papular type
  • Polymorphous light eruption, papulovesicular type
  • Polymorphous light eruption, plaque type
  • Pruritus estivalis

Information for Patients


Also called: Dermatitis, Skin rash

A rash is an area of irritated or swollen skin. Many rashes are itchy, red, painful, and irritated. Some rashes can also lead to blisters or patches of raw skin. Rashes are a symptom of many different medical problems. Other causes include irritating substances and allergies. Certain genes can make people more likely to get rashes.

Contact dermatitis is a common type of rash. It causes redness, itching, and sometimes small bumps. You get the rash where you have touched an irritant, such as a chemical, or something you are allergic to, like poison ivy.

Some rashes develop right away. Others form over several days. Although most rashes clear up fairly quickly, others are long-lasting and need long-term treatment.

Because rashes can be caused by many different things, it's important to figure out what kind you have before you treat it. If it is a bad rash, if it does not go away, or if you have other symptoms, you should see your health care provider. Treatments may include moisturizers, lotions, baths, cortisone creams that relieve swelling, and antihistamines, which relieve itching.

  • "Hot Tub Rash" and "Swimmer's Ear" (Pseudomonas) (Centers for Disease Control and Prevention)
  • Contact dermatitis
  • Diaper rash
  • Hot tub folliculitis
  • Pityriasis rosea
  • Rash - child under 2 years
  • Rashes

[Read More]

Sun Exposure

Also called: Sunburn

Ultraviolet (UV) rays are an invisible form of radiation. They can pass through your skin and damage your skin cells. Sunburns are a sign of skin damage. Suntans aren't healthy, either. They appear after the sun's rays have already killed some cells and damaged others. UV rays can cause skin damage during any season or at any temperature. They can also cause eye problems, wrinkles, skin spots, and skin cancer.

To protect yourself

  • Stay out of the sun when it is strongest (between 10 a.m. and 2 p.m.)
  • Use sunscreen with an SPF of 15 or higher
  • Wear protective clothing
  • Wear wraparound sunglasses that provide 100 percent UV ray protection
  • Avoid sunlamps and tanning beds

Check your skin regularly for changes in the size, shape, color, or feel of birthmarks, moles, and spots. Such changes are a sign of skin cancer.

Food and Drug Administration

  • Actinic keratosis
  • Polymorphic light eruption
  • Sunburn

[Read More]
Previous Code
Previous Code L56.3
Next Code
L56.5 Next Code